What is gene expression, Biology

Assignment Help:

What is Gene Expression ?

Gene expression is the process by which a gene is activated to produce a certain protein. Cells are able to respond to changes in the environment in two ways: 1.) by controlling the production of enzyme molecules that cause expression of a gene; and 2.) by controlling the activities of enzymes that are already present through the use of feedback mechanisms.

The control mechanism for gene expression is very different in prokaryotic cells than in eukaryotes.
The way in which a specific gene expresses itself is of particular interest to scientists. Many diseases have been found to be genetically-based. Therefore, the ability to control the form and behavior of a cell or an organism would prove especially useful in the prevention and cure of disease.

One area that holds real promise in the near future is in the cloning of new tissues or organs to replace those that have become injured or diseased. Cells from the body can be used to produce clones because each cell contains a full complement of DNA. Cloning involves removal of a cell from an organism, and then providing that cell with all of the nutrients, gases, and physical conditions necessary for its growth, development, and reproduction.

The larger question is: since each and every cell has the same DNA information, what are the determining factors that cause a newly formed skin cell to form the specialized structures that enable it to perform the functions of skin, rather than, say, the types of protein structures that characterize muscle cells?

 


Related Discussions:- What is gene expression

Define eosin - methylene blue (emb) agar (levine), Define Eosin - Methylene...

Define Eosin - Methylene Blue (EMB) Agar (Levine) Peptone - 10.0 gm Lactose - 5.0 gm Dipotassium - 2.0 gm Hydrogen Phosphate Agar - 13.5 gm Eosin Y - 0.4 gm M

How are the circulatory systems of animals classified, Q. How are the circu...

Q. How are the circulatory systems of animals classified? A circulatory system is classified as open or closed. In open circulatory systems blood gets out of vessels and flows

Atrial arrhythmias-peri operative problems, Atrial Arrhythmias :  Atl...

Atrial Arrhythmias :  Atlial fibrillation is the most common rhythm abnormality after CABG. Paroxysmal atrial tachycardia and atrial flutter are less common. Increased sympat

Which are nucleotides portions, Q. Which are nucleotides "portions" that to...

Q. Which are nucleotides "portions" that to bind in the formation of nucleic acids? What is meant by the 5' and 3' extremities of the nucleic acids? The phosphate group of one

Stems transport liquids, Stems transport liquids (a)  Cut about 2 cm fr...

Stems transport liquids (a)  Cut about 2 cm from the end of stems of celery and place them in cold water for about an hour to freshen. Next place the stems in dishes having red

Fire and cookery , Fire and Cookery : Fire and Cookery where and when f...

Fire and Cookery : Fire and Cookery where and when fiie came to be used  is not known.  Fire, to start with, must have been a frightening thing, giving rise to many myths and l

Discovery of plant hormones, Discovery of Plant Hormones To date, five...

Discovery of Plant Hormones To date, five major classes of plant hormones have been discovered namely auxins, gibberellins, cytokinins, abscisic acid and ethylene. It is possi

Explain the chemical properties of monosaccharides, Explain the Chemical Pr...

Explain the Chemical Properties of Monosaccharides? As you already know the chemical properties of monosaccharides depend on the presence of the hydroxyl the aldehyde or the ke

Define the potassium ion impermeability, At 1 AM, an impermeable membrane s...

At 1 AM, an impermeable membrane separates a 1 liter solution of 2M KCl in the left compartment from a 1 liter solution containing both 1M NaCl and 1M KCl in the right compartment.

Sensitive/critical periods: windows of enhanced plasticity, There are speci...

There are specific sensitive/critical periods in development during which acquisition of certain skills is substantially easier than at other times. In the animal domain there are

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd